<?php
// copy from Zend_Db_Statement_Interface
interface system_db_statement_interface {
	/**
	 * Bind a column of the statement result set to a PHP variable.
	 *
	 * @param string $column Name the column in the result set, either by
	 * position or by name.
	 * @param mixed  $param  Reference to the PHP variable containing the value.
	 * @param mixed  $type   OPTIONAL
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function bindColumn($column, &$param, $type = null);
	
	/**
	 * Binds a parameter to the specified variable name.
	 *
	 * @param mixed $parameter Name the parameter, either integer or string.
	 * @param mixed $variable  Reference to PHP variable containing the value.
	 * @param mixed $type      OPTIONAL Datatype of SQL parameter.
	 * @param mixed $length    OPTIONAL Length of SQL parameter.
	 * @param mixed $options   OPTIONAL Other options.
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function bindParam($parameter, &$variable, $type = null, $length = null, $options = null);
	
	/**
	 * Binds a value to a parameter.
	 *
	 * @param mixed $parameter Name the parameter, either integer or string.
	 * @param mixed $value     Scalar value to bind to the parameter.
	 * @param mixed $type      OPTIONAL Datatype of the parameter.
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function bindValue($parameter, $value, $type = null);
	
	/**
	 * Closes the cursor, allowing the statement to be executed again.
	 *
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function closeCursor();
	
	/**
	 * Returns the number of columns in the result set.
	 * Returns null if the statement has no result set metadata.
	 *
	 * @return int The number of columns.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function columnCount();
	
	/**
	 * Retrieves the error code, if any, associated with the last operation on
	 * the statement handle.
	 *
	 * @return string error code.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function errorCode();
	
	/**
	 * Retrieves an array of error information, if any, associated with the
	 * last operation on the statement handle.
	 *
	 * @return array
	 * @throws Zend_Db_Statement_Exception
	 */
	public function errorInfo();
	
	/**
	 * Executes a prepared statement.
	 *
	 * @param array $params OPTIONAL Values to bind to parameter placeholders.
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function execute(array $params = array());
	
	/**
	 * Fetches a row from the result set.
	 *
	 * @param int $style  OPTIONAL Fetch mode for this fetch operation.
	 * @param int $cursor OPTIONAL Absolute, relative, or other.
	 * @param int $offset OPTIONAL Number for absolute or relative cursors.
	 * @return mixed Array, object, or scalar depending on fetch mode.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function fetch($style = null, $cursor = null, $offset = null);
	
	/**
	 * Returns an array containing all of the result set rows.
	 *
	 * @param int $style OPTIONAL Fetch mode.
	 * @param int $col   OPTIONAL Column number, if fetch mode is by column.
	 * @return array Collection of rows, each in a format by the fetch mode.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function fetchAll($style = null, $col = null);
	
	/**
	 * Returns a single column from the next row of a result set.
	 *
	 * @param int $col OPTIONAL Position of the column to fetch.
	 * @return string
	 * @throws Zend_Db_Statement_Exception
	 */
	public function fetchColumn($col = 0);
	
	/**
	 * Fetches the next row and returns it as an object.
	 *
	 * @param string $class  OPTIONAL Name of the class to create.
	 * @param array  $config OPTIONAL Constructor arguments for the class.
	 * @return mixed One object instance of the specified class.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function fetchObject($class = 'stdClass', array $config = array());
	
	/**
	 * Retrieve a statement attribute.
	 *
	 * @param string $key Attribute name.
	 * @return mixed      Attribute value.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function getAttribute($key);
	
	/**
	 * Retrieves the next rowset (result set) for a SQL statement that has
	 * multiple result sets.  An example is a stored procedure that returns
	 * the results of multiple queries.
	 *
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function nextRowset();
	
	/**
	 * Returns the number of rows affected by the execution of the
	 * last INSERT, DELETE, or UPDATE statement executed by this
	 * statement object.
	 *
	 * @return int     The number of rows affected.
	 * @throws Zend_Db_Statement_Exception
	 */
	public function rowCount();
	
	/**
	 * Set a statement attribute.
	 *
	 * @param string $key Attribute name.
	 * @param mixed  $val Attribute value.
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function setAttribute($key, $val);
	
	/**
	 * Set the default fetch mode for this statement.
	 *
	 * @param int   $mode The fetch mode.
	 * @return bool
	 * @throws Zend_Db_Statement_Exception
	 */
	public function setFetchMode($mode);

}
